Home / 2,155.20-2,965.62-2,090.96

Finding the Fourth Proportional to 2,155.20, 2,965.62 and 2,090.96

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Solution

The fourth proportional to 2,155.20, 2,965.62 and 2,090.96 is: 2,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.20 : 2,965.62 = 2,090.96 : x
  2. Step 2: Convert to fraction form
    2,155.20/2,965.62 = 2,090.96/x
  3. Step 3: Cross multiply
    2,155.20x = 2,965.62 × 2,090.96
  4. Step 4: Simplify right side
    2,155.20x = 6,200,992.80
  5. Step 5: Solve for x
    x = 6,200,992.80/2,155.20
  6. Step 6: Final answer
    x = 2,877.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.